Step
| Action
| Value(s)
| Yes
| No
|
1
| Was the entire Memory Seats System Check performed?
| --
|
Go to Step 2
| Go to
Memory Seats System Check
|
2
|
- Turn the ignition switch to the OFF position.
- Connect a fused jumper from the memory seat/mirror diagnostic
connector to ground (connector may be taped up into the body harness).
- Listen for a chime that acknowledges entrance into mode 1
diagnostics.
Does the memory seat/mirror module chime once and enter diagnostic mode?
| --
|
Go to Step
4
|
Go to Step
3
|
3
| Inspect CKT 571
(YEL/BLK) for an open. Refer to
Testing for Continuity
in Wiring Systems.
Is CKT 571 OK?
| --
|
Go to Step 4
|
Go to Step 13
|
4
|
- Refer to
Memory Seats System Check
for a detailed explanation of the memory seat/mirror diagnostic
modes.
- Operate the LH seat switch in all directions.
The module will chime once for each switch input that the module receives.
- Any time a switch is operated and the module does not chime, the
module did not receive an input from that switch.
Were there any switch operations where the memory seat/mirror module
did not sound a chime?
| --
|
Go to Step 5
|
Go to Step 7
|
5
|
- Disconnect the ground from the memory seat/mirror diagnostic connector.
After 5 seconds, the module will sound 3 chimes in order
to indicate that the module has left the diagnostic mode.
- Disconnect the LH seat switch.
- With the appropriate switch pressed, connect a DMM from the suspect
connector cavity in the list below to cavity B (Oldsmobile) or cavity A (Buick)
of the LH seat switch:
| • | Entire Seat Forward: L (Oldsmobile) or G (Buick)
(TAN) |
| • | Entire Seat Back: M (Oldsmobile) or H (Buick) (LT GRN) |
| • | Rear Vertical Up: N (Oldsmobile) or C (Buick) (YEL) |
| • | Rear Vertical Down: P (Oldsmobile) or F (Buick)
(LT BLU) |
| • | Front Vertical Down: R (Oldsmobile) or B (Buick)
(DK GRN) |
| • | Front Vertical Down: S (Oldsmobile) or D (Buick)
(DK BLU) |
| • | Recline Forward: F (Oldsmobile) or K (Buick) (LT GRN) |
| • | Recline Back: E (Oldsmobile) or L (Buick) (LT BLU) |
Is the resistance less than the specified range?
| 5ohms
|
Go to Step 6
|
Go to Step 9
|
6
| Inspect the following circuits for an open between the
LH seat switch and the memory seat/mirror module:
| • | Entire Seat Forward: CKT 1522 (TAN) |
| • | Entire Seat Back: CKT 1532 (LT GRN) |
| • | Rear Vertical Up: CKT 1519 (YEL) |
| • | Rear Vertical Down: CKT 1521 (LT BLU) |
| • | Front Vertical Up: CKT 1518 (DK GRN) |
| • | Front Vertical Down: CKT 1520 (DK BLU) |
| • | Recline Forward: CKT 276 (LT GRN) |
| • | Recline Back: CKT 277 (LT BLU) |
Refer to
Testing for Continuity
in Wiring Systems.
Is the suspect circuit OK?
| --
|
Go to Step 7
|
Go to Step 13
|
7
| Connect
a test lamp from the appropriate motor connector cavity A to cavity B, while
operating the corresponding seat switch.
Does the test lamp light?
| --
|
Go to Step 8
|
Go to Step 14
|
8
| Replace
the suspect motor. Refer to
Front Seat Adjuster Motor Replacement
or
Front Seat Recliner Actuator Motor Replacement
.
Is the motor replacement complete?
| --
| Go to
Memory Seats System Check
| --
|
9
| Is this an Oldsmobile vehicle?
| --
|
Go to Step 10
|
Go to Step 12
|
10
| Is the inoperative function the recline function?
| --
|
Go to Step 11
|
Go to Step 12
|
11
| Inspect CKT 40 (ORN) for
an open between S211 and the LH seat switch cavity A. Refer to
Testing for Continuity
in Wiring Systems.
Is CKT 40 OK?
| --
|
Go to Step 12
|
Go to Step 13
|
12
| Replace
the LH seat switch. Refer to
Power Seat Switch Replacement
.
Is the seat switch replacement complete?
| --
| Go to
Memory Seats System Check
| --
|
13
| Repair the faulty circuit. Refer to
Wiring Repairs
in Wiring Systems.
Is the circuit repair complete?
| --
| Go to
Memory Seats System Check
| --
|
14
| Replace the memory seat/mirror module. Refer to
Memory Seat Control Module Replacement
in Seats.
Is the memory seat/mirror module replacement complete?
| --
| Go to
Memory Seats System Check
| --
|
